package com.aisino.api.util;

import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.bouncycastle.crypto.engines.SM2Engine;
import org.bouncycastle.crypto.params.ECPrivateKeyParameters;
import org.bouncycastle.crypto.params.ECPublicKeyParameters;
import org.bouncycastle.crypto.params.ParametersWithRandom;
import org.bouncycastle.jcajce.provider.asymmetric.ec.BCECPrivateKey;
import org.bouncycastle.jcajce.provider.asymmetric.ec.BCECPublicKey;
import org.bouncycastle.math.ec.ECPoint;
import org.bouncycastle.util.encoders.Hex;

import java.security.*;

public class SM2Util {
    static {
        Security.addProvider(new BouncyCastleProvider());
    }

    /**
     * SM2签名
     * @param data 待签名数据
     * @param privateKey 私钥
     * @return 签名结果
     */
    public static String sign(String data, String privateKey) {
        try {
            // 实现 SM2 签名逻辑
            // 这里需要根据具体需求实现
            return ""; // 返回签名结果
        } catch (Exception e) {
            throw new RuntimeException("SM2签名失败", e);
        }
    }

    /**
     * SM2验签
     * @param data 原文数据
     * @param signature 签名值
     * @param publicKey 公钥
     * @return 验签结果
     */
    public static boolean verify(String data, String signature, String publicKey) {
        try {
            // 实现 SM2 验签逻辑
            // 这里需要根据具体需求实现
            return true; // 返回验签结果
        } catch (Exception e) {
            throw new RuntimeException("SM2验签失败", e);
        }
    }
}

